A cold plunge system only eliminates the daily ice run if its chiller horsepower and filtration tier are matched to the tub's actual gallon capacity, not just labeled "compatible." The five kits below range from a 0.8 HP chiller built for a 79-gallon tub to a 1 HP unit engineered for a 216-gallon oval, each specced with a distinct filtration type so you can size the system before you buy.
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Top Pick
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Versatile
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Budget
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Best Value
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Best for Reliability
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| Product | 1HP Ice Bath Chiller & Cold Plunge Tub Kit, 216 Gal Oval | AS ColdPlunge Ice Bath Chiller & Cold Plunge Tub Kit, 148 Gal | Cold Plunge Tub with Water Chiller, 1HP, 135 Gallon | Recoverex Cold Plunge Tub, 88 Gallon, 0.8 Horsepower | ICEGALAX Ice Bath Tub with 0.8 HP Water Chiller, Built-in Filter & Pump |
| Filtration | External filter + pump | 20-micron external filter | Dual-stage filtration + ozone/UV | 2-step filtration + non-chlorine treatment | Built-in Origami filter cartridge |
| Horsepower | 1 HP | 1/3 HP | 1 HP | 0.8 HP | 0.8 HP |
| Temp range | Down to 37°F | Down to 42°F | 37°F-107.6°F | Down to 37°F | Down to 42°F |
| Capacity gal | 216 gal | 148 gal | 135 gal | 88 gal | 79 gal |
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Quick Tips
Match chiller horsepower to gallon capacity — a 1/3 HP unit struggles past 150 gallons, while 1 HP units hold steady in 200+ gallon tubs.Check whether the filter is built-in or external — external housings are easier to inspect and clean but add a second component to plumb.Confirm your ambient environment — most chillers need shaded, ventilated placement and lose efficiency below 32-36°F ambient temperature.Budget for a second delivery — most kits ship the tub and chiller in separate boxes that can arrive on different days.
1HP Ice Bath Chiller & Cold Plunge Tub Kit, 216 Gal Oval
Best for Reliability
1HP Ice Bath Chiller & Cold Plunge Tub Kit, 216 Gal Oval
What we like
- 1 HP compressor rated for continuous 24/7 operation
- 216-gallon oval tub fits full-body immersion for taller users
- Reinforced PVC, Oxford fabric, and EPE foam construction
- External filter and pump ship as a complete kit
What we don't
- Chiller and tub ship in two separate boxes and may arrive on different days
- Largest footprint in this roundup, needs dedicated floor space
- 1 HP compressor draws more power than smaller units
You get the largest capacity and coldest floor in this roundup — a 216-gallon oval tub paired with a 1 HP chiller rated for continuous operation. That combination means you won't be waiting on a warm afternoon for the water to catch up.
This is the pick if you're outfitting a shared home gym or you're over 6 feet tall and need real legroom in the tub. If you're plunging solo in a small bathroom, the footprint and power draw are more than you need.
AS ColdPlunge Ice Bath Chiller & Cold Plunge Tub Kit, 148 Gal
Best for Versatility
AS ColdPlunge Ice Bath Chiller & Cold Plunge Tub Kit, 148 Gal
What we like
- LED touchscreen for precise temperature setting
- 148-gallon oval tub with 10mm EPE insulation
- Includes submersible pump for standard bathtub use too
- Quick-connect fittings and insulated hoses included
What we don't
- 1/3 HP tops out around 42°F rather than the high-30s
- 1-year warranty is shorter than some competitors
- Cools slower than 1 HP units on hot days
You get a complete 148-gallon kit with an LED touchscreen and a 20-micron external filter for less than most standalone chillers cost on their own. The insulated hoses and quick-connect fittings mean you're not sourcing separate plumbing parts.
This is the pick if you want a full system without paying premium prices for horsepower you won't use. Skip it if your climate runs hot and you need the compressor to keep chasing 37°F rather than settle at 42°F.
Cold Plunge Tub with Water Chiller, 1HP Hot & Cold, 135 Gal
Best Value
Cold Plunge Tub with Water Chiller, 1HP Hot & Cold, 135 Gal
What we like
- Switches between 37°F cold plunge and 107.6°F hot soak
- Ozone/UV generator adds sanitation beyond filtration alone
- WiFi app control with session scheduling
- Heavy-duty PVC construction rated for repeated inflation
What we don't
- Dual-mode heating and cooling draws more power than cold-only chillers
- Inflatable design needs a flat, puncture-free surface
- Fewer Amazon reviews than category leaders
You get one tub that swings from a 37°F cold plunge to a 107.6°F hot soak, controlled through a WiFi app with dual-stage filtration and ozone sanitation. That range means you're not buying a second tub for contrast therapy.
This is the pick if your routine alternates hot and cold sessions in the same space. If you only ever plan to plunge cold, a single-mode chiller will cost you less to run.
Recoverex Cold Plunge Tub, 88 Gallon, 0.8 HP
Best for moving between spaces
Recoverex Cold Plunge Tub, 88 Gallon, 0.8 HP
Best for moving between spaces
What we like
- Cools to 37°F in under 4 hours
- Includes backpack and wheels for transport
- Ships with 2 extra replacement filters and a 6-month kit
- IPX4 water-resistant, UV-resistant canvas construction
What we don't
- 88-gallon capacity is snug for users over 6'2"
- Manufacturer recommends indoor storage below 36°F ambient
- Priced well above other kits in this capacity range
You get a chiller rated to hit 37°F in under four hours, packed into a system built around a carry backpack and wheels for moving between rooms or trips. The 2-step filtration ships with two spare cartridges so you're not reordering right away.
This is the pick if your cold plunge needs to move — between a garage and a patio, or into a car for travel. If your setup is permanent, the portability features are paying for convenience you won't use.
ICEGALAX Ice Bath Tub with 0.8 HP Water Chiller, 79 Gal
Best for small spaces
ICEGALAX Ice Bath Tub with 0.8 HP Water Chiller, 79 Gal
Best for small spaces
What we like
- Smallest footprint in this roundup
- Built-in filter needs no external housing to plumb
- Insulated hoses reduce temperature loss
- Smart remote control for temperature adjustment
What we don't
- 79-gallon capacity limits full-body submersion for taller users
- 42°F floor is the warmest ceiling in this roundup
- Smaller thermal reserve on hot days than larger units
You get the smallest footprint in this roundup, with a built-in Origami filter cartridge that skips the external housing entirely. At 79 gallons, it's sized for one person rather than a shared setup.
This is the pick if space is your real constraint — a small bathroom, apartment balcony, or tight corner of a garage. If you're over 6 feet tall and want to submerge past your shoulders, size up to one of the larger tubs above.
What to Look For
Horsepower determines how fast and how cold your system can go, not just whether it works. A 1/3 HP chiller is fine under 150 gallons in a temperate garage, but hot climates or 200+ gallon tubs need 1 HP or more to hold temperature.
Filtration comes in two forms: built-in cartridges that live inside the chiller housing, and external filter/pump assemblies you plumb separately. External systems are bulkier but easier to service — for a full breakdown of filtration types, see our [how to choose a cold plunge chiller](/how-to-choose-a-cold-plunge-chiller) guide.
Dual-mode units that cool and heat the same tub add flexibility but pull more power than cold-only chillers. Run the numbers with our [chiller sizing calculator](/chiller-sizing-calculator) before you commit to a horsepower rating.
Who Should Skip This
If you're not sure cold plunging will stick as a habit, a full chiller-and-filter kit is more commitment and cost than you need right now. A large cooler or stock tank with bagged ice gets you the same water temperature for a fraction of the price while you test the routine.
Once you're plunging four or more times a week, a matched chiller and filter system starts paying for itself in time saved.
Quick Picks — In Case You've Already Decided
1HP Ice Bath Chiller & Cold Plunge Tub Kit, 216 Gal Oval
Check Price on AmazonAS ColdPlunge Ice Bath Chiller & Cold Plunge Tub Kit, 148 Gal
Check Price on AmazonFrequently Asked Questions
Do I need a chiller if I already have a cold plunge tub?
No — most standalone chillers connect to any tub with 1/2-inch inlet/outlet ports, or with a submersible pump for tubs without ports. Check your tub's compatibility specs before buying a chiller separately.
How cold can a home cold plunge chiller actually get?
Most residential units cool water to somewhere between 37°F and 42°F, depending on horsepower and ambient temperature. 1 HP chillers generally reach the low end of that range faster and hold it more consistently in warm climates.
How often do I need to clean or replace the filter?
Built-in cartridge filters typically need cleaning every 2-4 weeks depending on water hardness and use frequency. External filter housings are easier to inspect and usually get changed on a similar schedule.
Can I skip the filter and just change the water instead?
You can, but without filtration you'll be draining and refilling every few days instead of every few weeks. A functioning filter plus periodic water treatment is what makes daily plunging practical long-term.
Is a 1/3 HP chiller enough for a single-person cold plunge?
Yes, for tubs under about 150 gallons in a moderate climate, a 1/3 HP chiller will reach and hold the low-40s°F range. For 200+ gallon tubs or consistently hot environments, size up to 1 HP or higher.
Buying Guide
Match your chiller's horsepower to your tub's gallon capacity first — a 1/3 HP unit works fine under 150 gallons, but you'll want 1 HP or higher for 200+ gallon tubs or hot climates. Then check filtration: built-in filters are simpler, external filters are easier for you to clean and replace.